El Gato
Villarato!
Just keep in mind that their main man KdB will have to adapt his playstyle around Messi and their second star player Aguero is 32 years old and just came of a big knee injury. Then you have a ton of positions where they lack quality , notably their LB , GK , CB and CDM.
One more thing to add is their pathetic CL exits in which they got bounced in the QF 4 times while being the favourites in all 4 of those ties.
I'm not sure if Messi would ever play anything, but a classic striker at City.